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<p>Results of investigating the spectral and luminescent characteristics of optical ceramics from thulium- and holmium- coactivated yttrium sesquioxide (Tm,Ho:Y<sub>2</sub>O<sub>3</sub>) are presented. The ceramic samples were fabricated using solid-state vacuum sintering of nano-sized particles with a complex chemical composition synthesized by laser evaporation. The transmittance of Tm,Ho:Y<sub>2</sub>O<sub>3</sub> ceramics in the region of 2 μm exceeded 82%, indicative of their high optical quality. The redistribution of line intensities in the luminescence spectra of <sup>3</sup>F<sub>4</sub> → <sup>3</sup>H<sub>6</sub> transitions of Tm<sup>3+</sup> and <sup>5</sup>I<sub>7</sub> → <sup>5</sup>I<sub>8</sub> transitions of Ho<sup>3+</sup> observed upon excitation of Tm<sup>3+</sup> to the <sup>3</sup>H<sub>4</sub> level in ceramics with different Tm<sup>3+</sup>/Ho<sup>3+</sup> ratios indicated the occurrence of a nonradiative energy transfer process from the <sup>3</sup>F<sub>4</sub> level of Tm<sup>3+</sup> to the <sup>5</sup>I<sub>7</sub> level of Ho<sup>3+</sup>.</p>

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Spectral-Luminescence Properties of Thulium- and Holmium-Coactivated Yttrium Sesquioxide Ceramic

  • 期刊论文

  • 发表日期：

    2025年3月10日

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  • R. N. Maksimov,
  • V. A Shitov,
  • V. V. Osipov,
  • E. M. Buzaeva,
  • P. A. Ryabochkina,
  • A. O. Ariskin

摘要

Results of investigating the spectral and luminescent characteristics of optical ceramics from thulium- and holmium- coactivated yttrium sesquioxide (Tm,Ho:Y2O3) are presented. The ceramic samples were fabricated using solid-state vacuum sintering of nano-sized particles with a complex chemical composition synthesized by laser evaporation. The transmittance of Tm,Ho:Y2O3 ceramics in the region of 2 μm exceeded 82%, indicative of their high optical quality. The redistribution of line intensities in the luminescence spectra of 3F4 → 3H6 transitions of Tm3+ and 5I7 → 5I8 transitions of Ho3+ observed upon excitation of Tm3+ to the 3H4 level in ceramics with different Tm3+/Ho3+ ratios indicated the occurrence of a nonradiative energy transfer process from the 3F4 level of Tm3+ to the 5I7 level of Ho3+.